A wire elongates by l mm when a load w is hung from it. If the wire goes over a pulley…
Physics · JEE Main · NTA Exams — Properties of Solids and Liquids
A wire elongates by l mm when a load w is hung from it. If the wire goes over a pulley and two weights w each are hung at the two ends, the elongation of the wire will be
(in mm)
(in mm)
- l
- 2 l
- zero
- l/2
Answer
(A) l
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